Join Date: May 2007
Location: Baltimore Maryland
Re: Engine Vacuum
I run Rhoads variable duration lifters and IMO, they are the best way to increase vacuum, but they are for hydraulic cams. They will work on solid cams, according to Rhoads, but some say they defeat the purpose of a solid cam. The vaccum tanks are ok, but they can still run down. What exactly are you trying to get more vacuum for? Brakes? If brakes, then make the switch to hydroboost. Best thing you will ever do.
Charlie Knudsen 67 Camaro RS/SS 350 TKO 600, 4.10's, AFR 195 Street Heads, Comp 270H, Rhoads Lifters, Crane Ignition, Pertronix Dizzy, Performer RPM Q-Jet, Heavily Modified Q-Jet, Hooker Comp Headers, MagnaFlow 2 1/2", 144 Decibles(Alpine CDA-7998 Head Unit, RF X7 and RF 750X Amps, MB Quart Mid's & High's, Kicker L7 12" Solo Barics)